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Linux Cross Reference
Linux/include/linux/kernel_stat.h

Version: ~ [ 2.4.0 ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~ 
  1 #ifndef _LINUX_KERNEL_STAT_H
  2 #define _LINUX_KERNEL_STAT_H
  3 
  4 #include <linux/config.h>
  5 #include <asm/irq.h>
  6 #include <linux/smp.h>
  7 #include <linux/threads.h>
  8 
  9 /*
 10  * 'kernel_stat.h' contains the definitions needed for doing
 11  * some kernel statistics (CPU usage, context switches ...),
 12  * used by rstatd/perfmeter
 13  */
 14 
 15 #define DK_MAX_MAJOR 16
 16 #define DK_MAX_DISK 16
 17 
 18 struct kernel_stat {
 19         unsigned int per_cpu_user[NR_CPUS],
 20                      per_cpu_nice[NR_CPUS],
 21                      per_cpu_system[NR_CPUS];
 22         unsigned int dk_drive[DK_MAX_MAJOR][DK_MAX_DISK];
 23         unsigned int dk_drive_rio[DK_MAX_MAJOR][DK_MAX_DISK];
 24         unsigned int dk_drive_wio[DK_MAX_MAJOR][DK_MAX_DISK];
 25         unsigned int dk_drive_rblk[DK_MAX_MAJOR][DK_MAX_DISK];
 26         unsigned int dk_drive_wblk[DK_MAX_MAJOR][DK_MAX_DISK];
 27         unsigned int pgpgin, pgpgout;
 28         unsigned int pswpin, pswpout;
 29 #if !defined(CONFIG_ARCH_S390)
 30         unsigned int irqs[NR_CPUS][NR_IRQS];
 31 #endif
 32         unsigned int ipackets, opackets;
 33         unsigned int ierrors, oerrors;
 34         unsigned int collisions;
 35         unsigned int context_swtch;
 36 };
 37 
 38 extern struct kernel_stat kstat;
 39 
 40 #if !defined(CONFIG_ARCH_S390)
 41 /*
 42  * Number of interrupts per specific IRQ source, since bootup
 43  */
 44 extern inline int kstat_irqs (int irq)
 45 {
 46         int i, sum=0;
 47 
 48         for (i = 0 ; i < smp_num_cpus ; i++)
 49                 sum += kstat.irqs[cpu_logical_map(i)][irq];
 50 
 51         return sum;
 52 }
 53 #endif
 54 
 55 #endif /* _LINUX_KERNEL_STAT_H */
 56
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